package DataStreamApi.Transformation算子.UDF;

import org.apache.flink.api.common.functions.OpenContext;
import org.apache.flink.api.common.functions.RichMapFunction;

public class Flink02_UDF_RICHFUNCTION extends RichMapFunction<String, String> {
    @Override
    public void open(OpenContext openContext) throws Exception {
        super.open(openContext);
    }

    @Override
    public String map(String value) throws Exception {
        return null;
    }
}
